Hola de nuevo...
I'll answer you in English so that anybody in the list can understand and
participate in this subject.
I think that if you don't know exactly which parameter to monitor you should
browse the whole OID list that you receive when you do a snmpwalk on your
switch, and identify the ones that fit your needs, with the help of the website
I said yesterday, or any other OIDs reference.
My case: The only thing I want to detect is if there is any damaged port in any
of my switches. So what I did was to snmpwalk on a switch which I positively
knew that had its port #2 damaged, and discover which OID was significantly
different for this port. And the one I found is:
iso.3.6.1.2.1.10.7.2.1.7
(maybe you can find it as its equivalent: SNMPv2-SMI::mib-2.10.7.2.1.7)
defined as: "a count of frames for which the first transmission attempt on a
particular interface is delayed because the medium is busy".
The thing is that it's the only OID I found that gave a very high value for
port #2 (about 65,000 or so) and 0 for the rest of ports that work properly.
The command I defined for this was like this:
define command {
command_name check_port
command_line $USER1$/check_snmp -H $HOSTADDRESS$ -C password -O
iso.3.6.1.2.1.10.7.2.1.7.$ARG1$ -w 1 -c 10 -u retries
}
For sure there must be somebody else in the list who can give to you a more
detailed or a more formally correct answer...
Hasta la proxima,
Alejandro
==
Alejandro Sanchez Merono
Area de Informatica y Comunicaciones
Instituto de Tecnologia Electrica - http://www.ite.es
Valencia - Spain
-----Mensaje original-----
De: Matias Blanco [mailto:[email protected]]
Enviado el: miércoles, 06 de mayo de 2009 19:27
Para: Alejandro Sánchez Meroño; [email protected]
Asunto: RE: [Nagios-users] check_snmp - warning numbers
Hola Alejandro,
Ahora otra cosa:
De que manera crees que pueda chequear los puertos de mi switch con nagios para
tener una idea más clara de lo que está sucediendo?
Porque esos paquetes entrantes con errores no se si son por causa de la PC o de
los puerto del switch...
Muchas Gracias...
Cristian
************************************
Hola Matías... :-) and hola everyone...
There exists a magical website where to identify every OID you can check with
SNMP, the link is:
http://support.ipmonitor.com/mibs_byoidtree.aspx
For your particular issue, if you type "RFC1213-MIB" at the "Search for:" form,
click the result given ("RFC1213-MIB"), and then "View:
Oid-tree", you'll be able to locate "ifInErrors(14)" at the tree shown, and
clicking it you'll find its Description, which reads literally:
"The number of inbound packets that contained errors preventing them from being
deliverable to a higher-layer protocol."
That's the answer to your question!!
Now some other questions appear...
Wouldn't it be nicer to know what exactly are you monitoring before you monitor
it, so you could properly interpret the results?
Is that parameter (number of inbound packets that contained errors and blah
blah blah...) significant enough to determine if a port is working properly or
not?
Hope this helps...
Best regards,
Alejandro
==
Alejandro Sanchez Merono
Area de Informatica y Comunicaciones
Instituto de Tecnologia Electrica - http://www.ite.es Valencia - Spain
-----Mensaje original-----
De: Matias Blanco [mailto:[email protected]] Enviado el: miércoles, 06 de
mayo de 2009 17:49
Para: [email protected]
Asunto: [Nagios-users] check_snmp - warning numbers
Hi, I am using the check_snmp nagios`s plugin. And when we check the ports
status of a 3com Baseline 2250 Plus, we recibe many ports results:
SNMP OK - 0
SNMP WARNING - *1*
SNMP WARNING - *84*
SNMP WARNING - *2*
SNMP WARNING - *2*
SNMP WARNING - *4*
The question is, what´s the meaning of the warning numbers?
Other information:
------------------
# 'check_snmp' command definition
define command{
command_name check_snmp
command_line $USER1$/check_snmp -H $HOSTADDRESS$ $ARG1$
}
Example of service
-------------------
define service {
use service-15x3x5-switchs
host_name 3COM2250P
service_description Port 03 [In Errors]
check_command check_snmp!-C public -o ifInErrors.3 -w
0 -m RFC1213-MIB
notifications_enabled 0
}
THANKS...
Matías Blanco.
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